[JS IR] Add CLI argument to setup error tolerance policy

-  Make sure dev mode is enabled if code with errors is allowed

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.kt

@@ -175,6 +175,9 @@ class K2JSCompilerArguments : CommonCompilerArguments() {
     @Argument(value = "-Xdisable-fake-override-validator", description = "Disable IR fake override validator")
     var disableFakeOverrideValidator: Boolean by FreezableVar(false)
 
+    @Argument(value = "-Xerror-tolerance-policy", description = "Set up error tolerance policy (NONE, SEMANTIC, SYNTAX, ALL)")
+    var errorTolerancePolicy: String? by NullableStringFreezableVar(null)
+
     override fun checkIrSupport(languageVersionSettings: LanguageVersionSettings, collector: MessageCollector) {
         if (!isIrBackendEnabled()) return